CMWSSB Complaint Analytics

Street	Depot	Complaints	People
Habibullah Road	DEP 113	103	61
Partha Sarathy Puram	DEP 113	73	25
West Mada Street	DEP 113	67	35
Kumarappa Street	DEP 113	66	25
Noor Veerasamy Street	DEP 113	61	5
North Ushman Road	DEP 113	56	30
Unnamalai Amman Street	DEP 113	48	19
Kodambakkam High Road (Alias) Dr.m.g.r. Salai	DEP 113	36	18
Cathedral Garden Road	DEP 113	35	12
Mahathma Gandhi Salai	DEP 113	35	17
Grama II Street	DEP 113	34	14
Balaji Avenue II Street	DEP 113	33	12

🛠 Sewer Complaints (main block · house block · overflow)

CSV PDF

Street	Depot	Sewer	People
Habibullah Road	113	65	42
Kumarappa Street	113	57	17
West Mada Street	113	57	27
Partha Sarathy Puram	113	51	18
North Ushman Road	113	40	24
Grama II Street	113	31	11
Kodambakkam High Road (Alias) Dr.m.g.r. Salai	113	26	14
South Mada Street	113	26	8
Veerabadran Street	113	26	14
Cathedral Garden Road	113	25	10

🚰 Water Complaints (no supply · short supply · leaks)

CSV PDF

Street	Depot	Water	People
Habibullah Road	113	31	21
Unnamalai Amman Street	113	28	14
Partha Sarathy Puram	113	18	10
Kumarappa Lane	113	12	9
Thilak Street	113	12	9
Bala Muthu Krishnan Street	113	11	7
Thirumoorthy Nagar I Street	113	11	1
North Ushman Road	113	10	9
Kodambakkam High Road (Alias) Dr.m.g.r. Salai	113	9	6
Krishnabai Street	113	9	4

💧 Water Pollution (pollution complaints)

CSV PDF

Street	Depot	Pollut.	People
Saradambal Street	113	11	5
Balaji Avenue II Street	113	8	7
Krishnabai Street	113	6	4
Rama Street	113	6	4
Thiyagaraya Gramani St	113	5	4
Dharmapuram Vii Street	113	4	3
Partha Sarathy Puram	113	4	2
Thilak Street	113	4	4
Cathedral Garden Road	113	3	1
Dharmapuram II Street	113	3	3

🔁 Recurrence — how often the same issue comes back (same category · same street)

PDF

Category	Street	Depot	Times	Span (days)	Avg gap (days)	Per month
Sewer Main Block	West Mada Street	113	51	546	10.9	2.8
Sewer Main Block	Habibullah Road	113	50	516	10.5	2.91
Sewer Main Block	Partha Sarathy Puram	113	47	513	11.2	2.75
Sewer Main Block	Kumarappa Street	113	45	543	12.4	2.48
Others	Noor Veerasamy Street	113	43	22	0.5	59.67
Sewer Main Block	North Ushman Road	113	37	545	15.1	2.04
Sewer Main Block	Grama II Street	113	29	560	20	1.55
No Water Supply	Unnamalai Amman Street	113	27	531	20.4	1.53
No Water Supply	Habibullah Road	113	24	542	23.6	1.33
Sewer Main Block	Jaganathan Road	113	24	482	21	1.49
Sewer Main Block	Kodambakkam High Road (Alias) Dr.m.g.r. Salai	113	23	521	23.7	1.32
Sewer Main Block	Mahathma Gandhi Salai	113	23	528	24	1.31

Avg gap = average days between consecutive complaints of that type on that street. Lower gap / higher “per month” = a faster-recurring, unresolved problem.

🔬 Advanced Analysis

Pareto — the vital few (which categories drive most complaints)

Categories ordered by volume with their cumulative share. The highlighted rows are the smallest set that together account for ~80% of all complaints — fix these first.

Category	Count	Share	Cumulative
Sewer Main Block vital	990	55.9%	55.9%
No Water Supply vital	287	16.2%	72.1%
Sewer - House Block vital	124	7%	79.1%
Others vital	117	6.6%	85.7%
Water Pollution	101	5.7%	91.4%
Water Leakage in Service Line / Main Line	70	4%	95.3%
Sewer Machine Hole Open (or) Broken	32	1.8%	97.1%
Water Short Supply	24	1.4%	98.5%
Hand Pump Repair	7	0.4%	98.9%
Rain Water Stagnation	4	0.2%	99.1%
Faulty Water Meter	3	0.2%	99.3%
New Sewer Connection Renewal	3	0.2%	99.4%
New Water Connection Renewal	3	0.2%	99.6%
Booking Issues	2	0.1%	99.7%
Bribery	2	0.1%	99.8%
New Sewer Connection Not Yet Given	1	0.1%	99.9%
Street Tank Supply Not Made	1	0.1%	99.9%
Unclosed Roads	1	0.1%	100%

When complaints arrive (weekday × time of day)

Load pattern across the week — darker cells are busier six-hour windows. Useful for staffing and planning proactive checks before the peak.

	Night	Morning	Afternoon	Evening	Total
Mon	1	188	102	35	326
Tue		122	104	35	261
Wed		136	119	33	288
Thu	2	136	105	43	286
Fri		121	87	38	246
Sat		122	74	35	231
Sun		44	57	33	134
Total	3	869	648	252	1,772

Linked problems (category pairs that hit the same streets)

Pairs of issue types that recur together on the same street, ranked by the number of streets where both appear. Strong pairs point to a shared root cause worth fixing in one visit.

Problem A	Problem B	Shared streets
No Water Supply	Sewer Main Block	70
Sewer - House Block	Sewer Main Block	50
Others	Sewer Main Block	40
Sewer Main Block	Water Pollution	40
No Water Supply	Sewer - House Block	35
No Water Supply	Others	34
No Water Supply	Water Pollution	32
Sewer Main Block	Water Leakage in Service Line / Main Line	30
No Water Supply	Water Leakage in Service Line / Main Line	23
Others	Sewer - House Block	23
Sewer Machine Hole Open (or) Broken	Sewer Main Block	23
Sewer - House Block	Water Leakage in Service Line / Main Line	21